Apparatus for pulp-board making



H T.`PR|CE APPARATUS FOR PULP BOARD MAKING March 6, '41928.

Filed June 5, 1927 4 Patented Mar. 6, 1928.

UNITED STATES PATENT OFFICE.

HERBERT THEODORE IRIC, 0F BURWOOD, SYDNEY, NEW SOUTH WALES, AUSTRALIA.

I APPARATUS FOR PULPr-BOARDvMAKING-.i

Application led June 3, 1927, vSerial N0. 196,334, and in Australia'ifuly 16, 1926.l

In order that the invention may be bet-ter understood reference'may be had to the ac companying pictorial drawing in which the casing is broken away to show the interior.

Apparatus constructed according to this invention comprises a tank or 'casing in which two endless woven wire -belts A and B are suitably driven by rollers C and D and carried upon rollers E and F.

The belts A and B are arranged in the shape of a Y, that is to say the two belts converge to a central point and thenrun together for some distance. Mounted at the meeting point of the belts A and B I may provide a hollow perforated roller or pipe G for supplying steam to the material passing that point. I also provide two Awoven wire screens H and J having reciprocating motion, and these screens H and J converge to near the meeting place of the belts A and B. The angle made by the'screens H and J about half that made by the belts A and The reciprocating motion of thescreens H and J is produced by means of pull rods K and L acting on one end of links M and N, this end being pushed outward. The links working on fulcrums O and P will cause the other end of the link to come up carrying with it the screens H and J. The links R follow the motion of the screensH and J.

In use the belts A and B are. driven in directions shown by the arrows towards the meeting point and in the space between one belt A and the'nearest screen H I feed the long bres whilst in the space between the other screen J and belt B I feed the finer materialwhich I desire to use as a surfacing mixture. As the. two belts A and B trav-el towards the meeting point they draw the long fibres and surfacing material with themat the same time thescreens H and J are reciprocating which tends to bring the lighter f material towards the screen H in one case and to eectua'lly `mix` the ingredients in the other. The two materials are joined at the stationary, and may alter the character of the screens and belts to suitl dierent materials. I may also have three or more pairs of belts and screens or use one screen reciprocatlng or stationary between the two belts.

It has been found by experiment that variety of pulp boards may be produced by the apparatus before described; for eX ample, a board may be prepared which has a long heavy fibred bottom and a fine smooth upper surface which will not collect dust, fluff and the like, and will readily take paint or stain, and may be plastered, papered or stenciled. .Another form of board may be prepared which has two fine smooth surfaces and a thick long bred interior.

I claiml. In Vapparatus for pulp board making, two moving and convergzging endless woven wire belts and two converging and reciproeating woven. wire screens substantially as described. i

2. In apparatus for pulp board making,

two moving Vand converging endless belts,

land two converging and reciprocating woven wire screens anda perforated roller 'for delivering steam at' the meeting place of the/ belts and screens substantially as deciproeating means for said screens substantially as described.

4. In apparatus for pulp board making,

u tank or Casing housing endless Woven Wire 5 belts carried on and moved forward by rollers and adapted to converge, und woven wire screens adapted to converge, reciproeating means for said screens, and a perforated pipe for admission ofsteam at the meeting place of the screens and belts substnntially as described.

In testimony whereof I have aixed my signature.

HERBERT THEODORE PRICE, 

